Synthesis and emission properties of Y2Si2O7:Eu3+ phosphor.

Europium doped yttrium silicate phosphor material has been prepared using combustion method for large scale production. For this material, the emission characteristics, crystallite size and morphology have been analysed through PL, XRD and FE-SEM respectively. The prepared material belongs to the structure of α-Y₂Si₂O₇ which is confirmed by XRD analysis and its average crystallite size found to be 37 nm. From PL analysis, the excitation peaks are observed at 260, 321, 363, 379, 384, 396, 412 and 416 nm. The broad band is centred at 260 nm is known as charge transfer band (CTB). Moreover, the emission peaks are observed at 579, 587, 590, 598, 612, 615, 620 and 699 nm. From the ratio between the intensity of magnetic and electric dipole transition (I₅₈₇ nm and I₆₂₀ nm), the preferred site of Eu³⁺ has been discussed in this paper. The relation between Eu³⁺ concentration and PL intensity is also discussed [ABSTRACT FROM AUTHOR]